INDUSTRIAL AND MUNICIPAL WASTEWATER TREATMENT PLANT

Transcription

1 INDUSTRIAL AND MUNICIPAL WASTEWATER TREATMENT IMR E&T S.r.l. Carla Galizia PLANT

2 Water crisis - Wastewater challenge Water is crucial for all aspects of our life and for the future of our planet The world is facing a water quality and quantity crisis caused by population growth, industrialization, food production and poor water use strategies. Wastewater pollution has the potential to contaminate scarce water resources The contamination of freshwater and coastal ecosystems compromise the access to safe drinking and bathing water, threatening food security, providing a major health and environmental management challenge.

3 Water & Development Improve wastewater management and preserve water quality is essential for a sustainable development Growth of industries on local markets is influenced by the quality and availability of water. Aside from the use for human and production needs, water quality contributes to improve social wellbeing. The protection of water resources means also the protection of wildlife, habitats and ecosystems. Effective strategies to manage wastewater provide opportunities to combine resources conservation, creation of economic opportunities and promotion of health practices.

4 Quantifying the problem 70-90% of fresh water used for food production, returning to the system contaminated 80% of wastewaters from human settlements and industrial sources are discharged without being treated Amount of treated and untreated wastewater discharged to water bodies In developing countries wastewater is mainly discharged untreated directly into rivers, lakes or the oceans Source: United Nations Environment Programme (UNEP)

5 In 47 countries, areas or territories, less than half the population uses improved sanitation facilities 2.4 billion people, mainly in Southern Asia, Eastern Asia and sub- Saharan Africa, without flush toilets and sewage systems Source: UNICEF and World Health Organization 2015

6 Wastewater & Health Polluted water from inadequate wastewater management is one the greatest health challenges Human are exposed to pathogenic organisms through direct or indirect contact. Common diseases are associated with exposure to polluted bathing waters, and consumption of contaminated drinking water and food. Over half of the world s hospital beds are occupied by people suffering from water related diseases Source: UN Water Report 2013

7 What s the future? Major growth in developing countries that already have inadequate wastewater infrastructures. Increase of population - increase the demand for food. The impact continue to grow In 2025 global population will exceed 9 billions Water demand grows twice then population growth

8 Wastewater a precious resource The management of wastewater is linked to the management of the entire water chain. Using appropriate technologies it is possible to recycle water and satisfy most water demands. Reuse: Agricultural Urban Environmental Industrial DRINKING WATER

9 Wastewater treatment: our solution IMR E&T design plants for the biological treatment of industrial and municipal wastewater Reliable results combining simple process and energy efficiency Municipal plant of Calvorde, (Germany) 8000 m 3 /day

10 The purification Activated sludge process which implement the Sequencing Batch Reactor (SBR) technology The microorganisms of the activated sludge operating in both AEROBIC and ANAEROBIC condition perform the biological degradation of the organic matter and removal of nutrients.

11 Vertical closed bioreactor Suitable conditions enhance microbiological activities Automatic control system regulates operative parameters to foster metabolic pathways High purification rate and optimization of energy consumption

12 The aeration A submersible aerator installed at the bottom of the reactor, allows the mixing of the wastewater with the activated sludge, and introduces the oxygen necessary for aerobic degradation process. Due to the vertical development of the reactor, compared to a traditional basin, retention time is strongly increased and the degree of utilization of O 2 is maximized

13 The structure: the efficiency and the cost The vertical structure leads to an optimization of oxygen availability Increasing the degree of O 2 utilization, the turbine operating time is decreased. In condition of minimum O 2 availability the conversion of organic pollutants to water and gas, is supported, reducing the production of sludge. Minimizing Electrical consumption & Sludge disposal operations Management costs are kept a minimum

14 Flexible Working in a time rather than in a space sequence leads to an ability to compensate peak loads, variable flows are treated producing effluents with constant purification rate Municipal plant of Podegradzie, (Poland) 1000 m 3 /day Bioreactors work independently. In case of seasonal reduction of wastewater flow, reactors can be shut down during low season

15 Adaptability Resistant to atmospheric interferences Remote areas Reducing construction of collector networks Hotel in Poland Meat processing plant Croatia

16 Bio-Wash Fine atomized water is sprayed from the top: Control of Foam formation Absorbs odors, preventing the emission into the environment. Anti-odor filters or additional substances are not necessary Plant can be built nearby populated areas. Industrial plant: Nestlè-Novartis, medical nutrients. 250 m 3 /day Worms (Germany) Luft und Lärm, Standard German for air quality and noyse control

17 Water reuse Drinking water production Total purification obtained through the IMR process followed by: 1. Microfiltration to remove larger particles 2. Reverse osmosis to remove contaminants and inorganic impurities 3. Stabilization and sterilization with UV system to kill any remaining bacteria Drinking water is produced and recycled Durst Maltery (Germany)

18 Municipal plant of Lehnin, (Germany) 6000 m 3 /day Industrial plant Valencia, (Spain) 1300m 3 /day

19 Cheese Factory in Croatia 60 m 3 /day Cheese Factory in Austria 1200 m 3 /day

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23 Carla Galizia